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Automatic Structure Determination of Regular Polysaccharides Based Solely on NMR Spectroscopy
Author(s) -
Magnus Lundborg,
Carolina Fontana,
Göran Widmalm
Publication year - 2011
Publication title -
biomacromolecules
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.689
H-Index - 220
eISSN - 1526-4602
pISSN - 1525-7797
DOI - 10.1021/bm201169y
Subject(s) - nuclear magnetic resonance spectroscopy , chemistry , polysaccharide , spectroscopy , two dimensional nuclear magnetic resonance spectroscopy , chemical structure , transverse relaxation optimized spectroscopy , analytical chemistry (journal) , fluorine 19 nmr , organic chemistry , stereochemistry , physics , quantum mechanics
The structural analysis of polysaccharides requires that the sugar components and their absolute configurations are determined. We here show that this can be performed based on NMR spectroscopy by utilizing butanolysis with (+)- and (-)-2-butanol that gives the corresponding 2-butyl glycosides with characteristic (1)H and (13)C NMR chemical shifts. The subsequent computer-assisted structural determination by CASPER can then be based solely on NMR data in a fully automatic way as shown and implemented herein. The method is additionally advantageous in that reference data only have to be prepared once and from a user's point of view only the unknown sample has to be derivatized for use in CASPER.

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